Cita APA (7th ed.)

McLellan, D. (1971). The Thought of Karl Marx: An introduction. Macmillan.

Cita Chicago (17th ed.)

McLellan, David. The Thought of Karl Marx: An Introduction. London: Macmillan, 1971.

Cita MLA (9th ed.)

McLellan, David. The Thought of Karl Marx: An Introduction. Macmillan, 1971.